———–UPDATE————-
In trying to upgrade to the new hotness 0.84, I ran into two problems.
1) don’t forget to copy over your /OpenVBX/OpenVBX/config/database.php and /OpenVBX/OpenVBX/config/openvbx.php files from the old directory and into the new hotness directory.

2)”PHP Fatal error: Call to undefined function get_instance() in /OpenVBX/libraries/MY_Config.php on line 43″

Apparently, others are also having this problem. The installer wants you to use vbx.example.com/index.php/install but that will cause everything to break too. You should be able to drop the index.php and go directly to vbx.example.com/upgrade all will be well in the world.